My take on Family Sharing in iOS 8
Like many Apple users, my family is heavily invested in the Apple universe. We have 4 users, 3 iPhones, 2 Macs, 2 Apple TVs, and 1 iPad. All users have their own Apple ID for iMessages and FaceTime. My Apple ID has been used to purchase all services and media so we can easily share it between our devices.
The announcement of iOS 8's Family Sharing feature looked to be a great addition and problem solver. I would love to be able to approve the purchases my kids make. I can't tell you how many songs we've bought from iTunes that we already "owned" after ripping from our physical CD collection and sharing via iTunes Match.
Yesterday, we began the process of upgrading our devices and upgrading 2 of our 3 iPhones. Things seemed to go pretty easy setting up my wife's iPhone. I had (accidentally) left my Apple ID as the iTunes user ID when restoring from the backup and accepted the Family Sharing invitation for her Apple ID. She has full access to all the media we have purchased.
Setting up my daughter's phone has been another story entirely. I followed the same process to back up her old iPhone and restore to her new iPhone. I signed into her Apple ID account for iClould and accepted the Family Sharing invite. I used her Apple ID to initially sign into iTunes. Going to the App Store > All Purchases does NOT bring up the list of expected family members and our "Family Purchases". So I changed the iTunes ID on her phone to my Apple ID. At this point the Apple Store appears completely borked. I get a message saying that her iTunes account is tied to a different iCloud account.